Adrien, who teaches French at Wittenberg University, pleaded not guilty Wednesday.

Springfield police say Adrien has been connected to two rapes in the area, as well as the attack on a 17-year-old earlier this month. In that case, the teen pushed away his attacker and grabbed the assailant's bag and cellphone as he fled.

A subpoena of cellphone records identified Adrien as the suspect, and victims identified him in a photo lineup.